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You searched for: subject:"total harmonic distortion (THD)"
[texts]Microcontroller Based Novel Dc-to-Ac Grid Connected Inverter Topology
The conventional line commutated ac-to-dc converters/ inverters have square-shaped line current which contains higher-order harmonics. Moreover, it requires a costly and bulky dc inductor or choke. The line current with the high harmonic contents generates EMI and therefore itcauses more heating of the core of distribution or power transformers. Alternatively, PWM based inverters using MOSFET/IGBT switches can be used for the above purpose...
Keywords: grid connected inverter; total harmonic distortion (THD); simulink; line current
Downloads: 304
[texts]Strength Pareto Evolutionary Algorithm for Designing and Controlling a Three-level Inverter without Balancing DC Bus Bar Voltages
This work deals with a Neutral Point Clamped multilevel inverter without balancing the voltage boundaries of DC bank capacitors and without dedicated EMC filters. To achieve this goal, a control over  Modulated Hysteresis Current and a specific low-pass passive filter are implemented. The control strategy is associated with low and constant frequency mono carrier signal. The different components of the filter and the ones of the control are simultaneously designed by a genetic algorithm...
Keywords: Multilevel Inverter; Modulated Hysteresis Control Current MHCC; SPEA; Total Harmonic Distortion THD; EMC
Downloads: 3
[texts]Strength Pareto Evolutionary Algorithm for Designing and Controlling a Three-level Inverter without Balancing DC Bus Bar Voltages
This work deals with a Neutral Point Clamped multilevel inverter without balancing the voltage boundaries of DC bank capacitors and without dedicated EMC filters. To achieve this goal, a control over  Modulated Hysteresis Current and a specific low-pass passive filter are implemented. The control strategy is associated with low and constant frequency mono carrier signal. The different components of the filter and the ones of the control are simultaneously designed by a genetic algorithm...
Keywords: Multilevel Inverter; Modulated Hysteresis Control Current MHCC; SPEA; Total Harmonic Distortion THD; EMC
Downloads: 7
[texts]2013020214 Cascaded Asymmetric Multilevel Inverter For Wind Energy Conversion System - Rachel Cilvi John,P.Sebastian Vindro Jude,Dr.R.Mahalaksm
This paper aims on the design and implementation ofasymmetric cascaded H-bridge multilevel inverter in thegrid side of the wind energy conversion system. Themain focus is to design the grid side inverter so as toreduce the total harmonic distortion at the minimumlevel which is effective on the grid code requirements.The asymmetric cascaded H-bridge multilevel invertertopology has been implemented in this paper to suppressthe total harmonic distortion...
Keywords: –Neutral Point Clamped (NPC); Total Harmonic Distortion (THD); Permanent Magnet Synchronous Generator (PMSG)
Downloads: 33
[texts]Harmonic Minimization In Multilevel Inverters By Using PSO
Harmonic Elimination in a multilevel inverters is an optimization problem which is solved by applying particle swarm optimization (PSO) technique. The derived equation for the computation of total harmonic distortion (THD) of the output voltage of the multilevel inverter is used as the objective function in PSO algorithm. The objective function used is to reduce the THD of the multilevel inverter and obtain the corresponding switching angles with the elimination of possible lower order harmonics...
Keywords: selective harmonic elimination(SHE); particle swarm optimization(PSO); Total harmonic distortion(THD)
Downloads: 157
[texts]26. A Novel .full
Use of multilevel inverters has become popular in recent years for high-power applications. Various topologies and modulation strategies have been investigated for utility and drive applications in the literature. The THD contents in output voltage of inverters is very significant index as the performance of drive depends very much on the quality of voltage applied to drive. The THD depends on the switching angles for different units of multilevel inverters; therefore, the switching angles are c...
Keywords: Cascaded H-Bridge (CHB) Multilevel Inverter (MLI); Total Harmonic Distortion (THD); Pulse Width Modulation (PWM); Switching Frequency; BLDC Drive
Downloads: 40
[texts]Neuro-Fuzzy Five-level Cascaded Multilevel Inverter for Active Power Filter
This paper presents an investigation of five-LevelCascaded H-bridge(CHB) inverter as Active Power Filter inPower System (PS) for compensation of reactive power andharmonics. The advantages of CHB inverter are low harmonicdistortion, reduced number of switches and suppression ofswitching losses. The Active Power Filter helps to improvethe power factor and eliminate the Total Harmonics Distortion(THD) drawn from a Non-Liner Diode Rectifier Load (NLDRL).The D-Q reference frame theory is used to gen...
Keywords: Active power filter(APF); Five-level cascade inverter; level shifted pulse width modulation(LSPWM); neuro-fuzzy controller(NFC); total harmonic distortion(THD); harmonics
Downloads: 50
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